机械5

摘要 本次课程设计内容涉及了机械制造工艺及机床夹具设计、金属切削机床、公差配合与测量等多方面的知识。 滑动轴承盖加工工艺规程及钻孔的夹具设计是包括零件加工的工艺设计、工序设计以及专用夹具的设计三部分。在工艺设计中要首先对零件进行分析，了解零件的工艺再设计出毛坯的结构，并选择好零件的加工基准，设计出零件的工艺路线；接着对零件各个工步的工序进行尺寸计算，关键是决定出各个工序的工艺装备及切削用量；然后进行专用夹具的设计，选择设计出夹具的各个组成部件，如定位元件、夹紧元件、引导元件、夹具体与机床的连接部件以及其它部件；计算出夹具定位时产生的定位误差，分析夹具结构的合理性与不足之处，并在以后设计中注意改进。 关键词：工艺、工序、切削用量、夹紧、定位、误差。 ABSTRCT This desig
n co
nte
nt has i
nvolved the machi
ne ma
nufacture craft a
nd the e
ngi
ne bed jig desig
n, the metal-cutti
ng machi
ne tool, the commo
n differe
nce coordi
natio
n a
nd the survey a
nd so o
n thevarious k
nowledge. The reductio
n gear box body compo
ne
nts tech
nological process a
nd its the processi
ng hole jig desig
n is i
ncludes the compo
ne
nts processi
ng the tech
nological desig
n, theworki
ng procedure desig
n aswell as the u
nit clamp desig
n three parts. Must first carry o
n the a
nalysis i
n the tech
nological desig
n to the compo
ne
nts, u
nderstood the compo
ne
nts the craft redesig
ns the semi fi
nished materials the structure, a
nd chooses the good compo
ne
nts the processi
ng datum, desig
ns the compo
ne
nts the craft route; After that is carryi
ng o
n the size computatio
n to a compo
ne
nts each labor step ofworki
ng procedure, the key is decides eachworki
ng procedure the craft equipme
nt a
nd the cutti
ng specificatio
ns; The
n carries o
n the u
nit clamp the desig
n, the choice desig
ns the jig each compositio
n part, like locates the part, clamps the part, guides the part, to clamp co
ncrete a
nd the e
ngi
ne bed co
n
nectio
n part aswell as other parts; Positio
n errorwhich calculates the jig locateswhe
n produces, a
nalyzes the jig structure the ratio
nality a
nd the deficie
ncy, a
ndwill desig
n i
n later pays atte
ntio
n to the improveme
nt. Keywords: The craft, theworki
ng procedure, the cutti
ng specificatio
ns, clamp, the localizatio
n, the error 目录 一零件的分析 1.1零件的作用 1.2零件的工艺分析 二.工艺规程设计 2.1确定毛坯的制造形式 2.2基面的选择 2.3制定工艺路线 2.4机械加工余量、工序尺寸及毛坯尺寸的确定 2.5确定切削用量及基本工时 三夹具设计 3.1问题的提出 3.2定位基准的选择 3.3切削力和夹紧力的计算 3.4定位误差分析 3.5夹具设计及操作的说明 总结 参考文献